Cayenne GTS (9PA) V8-4.8L (2008)
1. Unscrew the two fastening screws and remove cover for the particle filter.
2. Pull out filter downwards.
3. Unscrew the six fastening screws -2- for the fan housing. Support housing.
4. Raise retaining clips and remove the fan housing.
Disassembling heater/air-conditioning unit